Lamp optic



FIG. 1 is a perspective view of a lamp optic as seen from the top, front side, wherein the broken line disclosure is for environmental purposes only and does not form a part of the claimed design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof, the lamp optic being rotationally symmetric except for the unclaimed broken line disclosure; and,

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a lamp optic, as shown and described. 